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Clear Coat

Clear Coat (often referred to as one word, clearcoat) is an effect that simulates thin, often glossy layers on the outer surface of a material. It can be used to create the appearance of materials like automotive paint, lacquered wood, carbon fiber composite, and many others.

Poiyomi Clear Coat Demo

Example of Clear Coat used on two Material Spheres.

ClearCoat Visibility​

  • Type: Float, Range: 0.0 - 1.0

Strength of the clearcoat effect. Controls how much of the clearcoat should be applied to the base color.

This option scales the Clearcoat Mask if defined. If not defined, this option directly controls the clearcoat strength.

Smoothness​

  • Type: Float, Range: 0.0 - 1.0

Smoothness of the clearcoat surface. Lower values result in more blurred reflections, and more diffuse (larger but dimmer) specular highlights.

This option scales the Smoothness Map if defined. If not defined, this option directly controls the smoothness of the clearcoat.

Reflections Visibility​

  • Type: Float, Range: 0.0 - 1.0

Strength of the clearcoat layer's reflections.

This option scales the Reflection Mask if defined. If not defined, this option directly controls the strength of clearcoat reflections.

Specular Visibility​

  • Type: Float, Range: 0.0 - 1.0

Strength of the clearcoat layer's specular highlights.

This option scales the Reflection Mask if defined. If not defined, this option directly controls the strength of clearcoat specular highlights.

Reflection Tint​

  • Type: Color

Tint color applied to the clearcoat reflections. This can be used to add a metallic look to the clearcoat layer.

Specular Tint​

  • Type: Color

Tint color applied to the clearcoat specular highlights. This can be used to add a stylized look to the clearcoat layer.

Packed Maps​

The Maps texture is composed of 4 channels. These channels can be packed by adding individual textures to the packer. If you only have one mask or map to apply, the packer can be used to create a texture that defaults undefined channels to white, so their effects can be properly defined by the effect sliders.

When using the packer, make sure to press confirm before saving the scene, as the texture is not stored on disk before the confirm button is pressed.

Note that all channels/textures in the packed Maps texture will use the same texture properties, including tiling, offset, panning, and UV.

ClearCoat Mask​

  • Type: Data Texture (sRGB OFF)

Defines how much intensity to apply the clearcoat with at different areas on the material. This can be useful for only applying the clearcoat in specific areas.

Smoothness Map​

  • Type: Data Texture (sRGB OFF)

Defines the clearcoat smoothness at different areas on the material.

Reflection Mask​

  • Type: Data Texture (sRGB OFF)

Defines how much to apply reflections at different areas on the material.

Specular Mask​

  • Type: Data Texture (sRGB OFF)

Defines how much to apply specular highlights at different areas on the material.

Invert ClearCoat Mask​

  • Type: Checkbox

Defines whether the clearcoat mask channel should be inverted.

Invert Smoothness​

  • Type: Checkbox

Defines whether the clearcoat smoothness channel should be inverted. Useful for reusing Roughness masks.

Invert Reflection Mask​

  • Type: Checkbox

Defines whether the clearcoat reflection mask channel should be inverted.

Invert Specular Mask​

  • Type: Checkbox

Defines whether the clearcoat specular mask channel should be inverted.

Fallback Cubemap​

  • Type: Cubemap Texture (sRGB ON)

A cubemap that can be used in cases where no reflection probe is present in the scene. This is useful for maps that have not been set up with proper reflection probes.

Force Fallback​

  • Type: Checkbox

Whether to use the fallback at all times instead of just when no reflection probe is defined.

Lit Fallback​

  • Type: Checkbox

Whether the fallback cubemap should be lit according to the environment when used. Useful for preventing the fallback from appearing too bright in dark world areas.

GSAA​

  • Type: Checkbox

GSAA (Geometric Specular Anti-Aliasing) is a corrective option that prevents high-smoothness specular highlights from disappearing on surfaces with sharp changes. This is especially useful on surfaces with sharp or sudden edges (hard-surfaced edges), or on surfaces with intense, high detail normal maps.

It's recommended to keep GSAA enabled unless it creates issues with specific models.

GSAA Variance​

  • Type: Float, Range: 0.0 - 1.0

Controls how much to apply GSAA, relative to the amount of change in the screen-space world normal.

This value generally does not need to be adjusted.

GSAA Threshold​

  • Type: Float, Range: 0.0 - 1.0

Controls at what level of roughness GSAA should be applied at.

This value generally does not need to be adjusted.

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